compositor-x11: Allow output configuration from config file.
This patch provides a way to define outputs for the x11 backend. It
parses [output] sections and checks for 'name' and 'mode' keys. The
'name' must start with an 'X' to distinguish from drm output names.
Command line options --width and --height supersede what is in the
config file. When --output-count is passed, the number of outputs
are limited or additional outputs added with default values.
diff --git a/weston.ini b/weston.ini
index c2d6369..1de8e29 100644
--- a/weston.ini
+++ b/weston.ini
@@ -41,3 +41,8 @@
#[output]
#name=VGA1
#mode=173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
+
+#[output]
+#name=X1
+#width=1024
+#height=768